Re: JIT compiler changeset results in plot failure with segfault

[Daniel J Sebald]

On 11/02/2013 02:41 AM, John W. Eaton wrote:
> I noticed that "sombrero" was failing for me by causing Octave to exit
> with a segfault. Bisecting shows this changeset as the first bad one:
>
> The first bad revision is:
> changeset: 17792:26e9312e6928
> user: Rik <address@hidden>
> date: Tue Oct 29 11:09:49 2013 -0700
> summary: Build JIT compiler by default, but do not enable it by default.
>
> I don't understand how this could cause trouble for plotting,
> especially if it the jit compiler is disabled by default.

This could be a scenario that hasn't really been tested yet.  That is, 
the common way developers have been using JIT is that if JIT is 
compiled, then it is enabled.  Now is a scenario where JIT is compiled, 
but not enabled.  Try enabling it again by changing back this line

     2.7 -static bool Vjit_enable = true;
     2.8 +static bool Vjit_enable = false;

(Or, I suppose one could just enable JIT from the command line and try 
plotting the sombrero again.)

If things work again when JIT is enabled, perhaps its just some 
longstanding bug that no one ever came across or thought to check for.

Dan